Lee, Dock-Young Kang, Suk-Won Kim, Ki-Bae 2024-01-21T02:32:21Z 2024-01-21T02:32:21Z 2021-09-02 2006-09 1012-0394 https://pubs.kist.re.kr/handle/201004/135173 The mechanical properties of electromagnetically stirred billet of Al alloy during continuous casting such as a tensile, impact, and fatigue property was examined with respect to a size and roundness of primary a phase to examine the influence of the globularization and refining of primary alpha phase on the dynamic mechanical property. The billet was continuously cast in a casting speed of 100 to 600 mm/min during the electromagnetic stirring with a magnetic flux density of 700 Gauss and then was heat-treated. All tensile properties were enhanced with decreasing the size of primary alpha crystal and the ultimate tensile strength (UTS), yield strength, and elongation was obtained 320MPa, 235MPa, and 17.8%, respectively, at a size of primary a phase of 77 urn. The fatigue life at fracture was largely improved by 37% from 1.25 x 10(5) to 1.7 x 10(5) cycles and the fracture toughness was obtained approximately 7.25 joules as a maximum value at a minimum size of primary alpha phase on the present experiment condition. Therefore, it indicates that all mechanical properties can be improved at the higher casting speed owing to the fine microstructure of a primary alpha phase and also eutectic phase due to the higher cooling rate. English TRANS TECH PUBLICATIONS LTD BEHAVIOR Dynamic mechanical properties of continuously cast Al alloy in electromagnetic stirrer Article 10.4028/www.scientific.net/SSP.116-117.340 1 SEMI-SOLID PROCESSING OF ALLOYS AND COMPOSITES, v.116-117, pp.340 - 343 SEMI-SOLID PROCESSING OF ALLOYS AND COMPOSITES 116-117 340 343 scie scopus 000241660500075 2-s2.0-85088718618 Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Materials Science, Composites Physics, Applied Physics, Condensed Matter Materials Science Metallurgy & Metallurgical Engineering Physics Article; Proceedings Paper BEHAVIOR elongation fracture toughness fatigue property electromagnetic stirring Al alloy primary alpha phase